id:A090710 - OEIS Search Results

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Decimal primes whose decimal representation in base 7 is also prime.

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2, 3, 5, 23, 41, 43, 61, 113, 131, 241, 313, 401, 421, 443, 461, 463, 661, 1013, 1033, 1051, 1123, 1231, 1301, 1433, 1453, 1543, 1613, 2111, 2131, 2153, 2203, 2333, 2441, 2531, 2551, 3121, 3163, 3251, 3323, 3433, 3541, 4001, 4111, 4153, 4201, 4241, 4421 (list; graph; listen)

	OFFSET	`2,1`
	EXAMPLE	`19 is prime in decimal and 19 base 7 is 31 which is also prime in decimal.`
	CROSSREFS	`Sequence in context: A138170 A105885 A104736 this_sequence A080016 A042363 A138655` `Adjacent sequences: A090707 A090708 A090709 this_sequence A090711 A090712 A090713`
	KEYWORD	`base,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Jan 18 2004`

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Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.

AT&T Labs Research